According to a new 10-month long research study by the Environmental Working Group (EWG), the answer is maybe. One thing is definite, cell phone do emit radiation, and at levels that concern scientists for possible cancer risks. Whether or not cell phone radiation poses a health risk remains uncertain, however, several studies have suggested increased risk of brain and mouth cancers, as well as an increase in children’s behavior problems, among frequent cell phone users.

The EWG studied over 1,000 cell phone sold in the US and rank the top 10 best (low radiation) and 10 worst (high radiation) cell phones. You can search the EWG’s cell phone radiation database to see how your phone rates.

What about the little chip that promised to diffuse radiation away from your head? According to the research, they do little if any good because it weakens the phone’s signal making it work harder, thus uses more radiation to do so.